- Compatibility: This adapter board is designed for use with a variety of operational amplifiers, including LM833, LM4562, 4558, 5532, 4556, LF353, OP275, AD712, AD827, AD746, AD797, OPA2604, OPA627, OPA637, and AD843. Easily replace or upgrade your existing components like the AD847 Double. - High-Quality Build: Features a fully gold-plated pin adapter board for enhanced conductivity and durability. The OPA627AU SMD Single Operational Amplifier ensures reliable performance and longevity. - Versatile Applications: Ideal for a range of audio applications, including front and rear amplifiers, output buffers, voltage amplifiers, and headphone amplifiers. - Superior Sound Quality: Delivers a warm sound with a rich sound field. Enjoy delicate, soft, and graceful audio quality that enhances your listening experience with high fidelity and clarity. - User-Friendly Design: Compact and functional design makes installation straightforward, allowing you to upgrade your audio system with ease. This operational amplifier adapter board is an essential component for audiophiles seeking to enhance their audio equipment's performance and sound quality.